Sage Atri introduces his Wife Anasuya to Sri Rama, as follows:
दश वर्षाण्य् अनावृष्ट्या दग्धे लोके निरन्तरम् || २-११७-९ यया मूल फले सृष्टे जाह्नवी च प्रवर्तिता | उग्रेण तपसा युक्ता नियमैः च अप्य् अलम्कृता || २-११७-१० दश वर्ष सहस्राणि यया तप्तम् महत् तपः | अनसूया व्रतैः तात प्रत्यूहाः च निबर्हिताः || २-११७-११ देव कार्य निमित्तम् च यया सम्त्वरमाणया | दश रात्रम् कृत्वा रात्रिः सा इयम् माता इव ते अनघ || २-११७-१२
"O, Irreproachable Rama! When the earth was burnt up by drought without break for ten years, this virtuous woman produced fruit and roots, caused the River Jahnavi to flow here, undergoing a rigid mortification enriched by pious observances, by whom the most severe asceticism was practised for ten thousand years and obstacles were done away with and by whom for the reason of a divine command, in a great hurry ten nights were reduced to one night. This Anasuya, who has bathed after completion of the voes, is like a mother to you."
In Durga Saptasati, Devi was eulogised as Sakambari.
ततोऽहमखिलं लोकमात्मदेहसमुद्भवैः। भरिष्यामि सुराः शाकैरावृष्टेः प्राणधारकैः॥४८॥
शाकम्भरीति विख्यातिं तदा यास्याम्यहं भुवि। तत्रैव च वधिष्यामि दुर्गमाख्यं महासुरम्॥४९॥
Then I shall feed and sustain the entire world with life sustaining vegetables, produced from my own body, until the rains come. [ 48]
In this manner, I shall attain renown under the name of 'She-who-supports-with vegetables' (Sakambhari).
My doubt is - Was the concept of Sakambari in Durga Saptasathi, taken from the deeds of Anasuya of Ramayana?